Possibilities of densitometry in the assessment of diffuse changes in the lung parenchyma

The data obtained from chest computed tomography (CT) can be analyzed not only visually, but also quantitatively. Quantitative assessment allows a more accurate and objective evaluation of the disease severity. Densitometry is the most researched way to quantify CT data - automatic analysis of lung densities expressed in Hounsfield units. This review is focused on the types of diseases that can be characterized by the formalization of the diagnostic task and application of densitometry, as well as on the limitations of the method and the ways to cope with them.